Production of bioelectricity from palm oil mill effluent through a dual chamber-microbial fuel cell system with the addition of Lactobacillus bulgaricus

• Published in: IOP conference series. Earth and environmental science Vol. 1282; no. 1; pp. 12046 - 12059
• Main Authors: Febriawan, SD, Febriana, AP, Yuniarto, A, Purwanto, M
• Format: Journal Article
• Language: English
• Published: Bristol IOP Publishing 01.12.2023
• Subjects: Bacteria; Biochemical fuel cells; Bioelectricity; Biofuels; Chambers; Chemical oxygen demand; Electrolytic cells; Fuel cells; Fuel technology; Ion exchange; Lactobacilli; Lactobacillus bulgaricus; Liquid wastes; Microorganisms; Palm oil; Potassium permanganate; Solid suspensions; Substrates; Suspended solids; Vegetable oils; Wastewater
• ISSN: 1755-1307; 1755-1315
• DOI: 10.1088/1755-1315/1282/1/012046

Abstract Palm oil liquid waste has been successfully developed to produce bio-electricity with a dual chamber-microbial fuel cell system. This study utilized the Lactobacillus bulgaricus bacteria as a support for the substrate samples prepared in the anode chamber. Meanwhile, in the cathode chamber, KMnO 4 electrolyte solution is used as an electroactive species that can capture electrons well. In addition, salt bridges fabricated from agar have a role as ion-exchange media in microbial fuel cells. The test results showed that the best performance was obtained in samples of palm oil wastewater with the addition of 10% Lactobacillus bulgaricus (LS/B-10) bacteria with current, voltage, and power density values of 0.9640 mA, 0.6760 V, and 248.04 mW/m2, respectively. The MFC system has also been proven to be able to reduce COD (Chemical Oxygen Demand) and TSS (Total Suspended Solid) levels, with the results of a reduction percentage of 42.6% and 7.2%, respectively, in the LS/B-10 variable treatment. All test results show that palm oil wastewater with the addition of Lactobacillus bulgaricus bacteria is promising for producing bioelectricity with a microbial fuel cell system.